Actress Margot Kidder, best known for playing the role of Lois Lane in 1978’s Superman and three sequels opposite Christopher Reeve and perhaps the best remembered version of the character, passed away yesterday at her home in Montana, her manager confirmed. A cause of death was not given.

In addition to her Superman role, she also starred in The Amityville Horror in 1979. Those two roles propelled her to stardom in movies and TV shows. However in the 1990s she was diagnosed with mental health issues, and in 1996 made headlines when she disappeared for four days during a manic episode. She later got control of it and advocated for better mental health options. She most recently appeared in 2017’s The Neighborhood and had been making convention appearances.